<!doctype html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>用户登录首页</title>
</head>

<body>
    登录人: <span id="loginUser"></span>

    <script src="js/jquery-3.7.1.min.js"></script>
    <script>
        $.ajax({
            url: "user2/getLoginUser",
            type: "get",
            //因为没有参数所以不用传参数
            //直接等待后端代码的执行结束，再来执行下述的代码
            success: function(userName) {
                // 我们要在其登录人后面添加上返回的 userNanme
                $("#loginUser").text(userName);
            }
        });
    </script>
</body>

</html>